DESCRIPTION:(from NBC's press release) "THANK GOD YOU'RE HERE" -- TELEVISION'S MOST DANGEROUS COMEDY CHALLENGE --PREMIERES -- From the producers of "American Idol," television's most dangerous comedy challenge premieres. Hosted by David Alan Grier ("In Living Color") and presided over by improv judge, Dave Foley ("NewsRadio," "Kids in the Hall"), "Thank God You're Here" showcases the improv skills of a group of four different brave actors each week, as they walk into a live sketch without a script, their only armor and motivation is an unforeseen and unexplained wardrobe change. Taped in front of a live audience, the group of guest stars taking on the improv challenge include Jennifer Coolidge ("For Your Consideration," "Best in Show"), Bryan Cranston ("Malcolm in the Middle"), Joel McHale (E! Entertainment's "The Soup") and Wayne Knight ("Seinfeld").